S32 Design Studio 2.0 vs 1.3 and RTM vs EARS and...

What is going on with the versioning... S32 Design Studio 2.0 vs 1.3 -- is there a reason to choose one over the other?

Then you have the SDK, I thought I was running the latest and greatest with Design Studio 1.3 and SDK RTM (release to manufacturing) 1.0.x only to "upgrade" to 2.0 (painfully, as processor expert chokes on the 1.3 import) to downgrade to EARS 0.8.4/.5 (early access release?)

In particular, I'm concerned possibly seeing some functionality removed, like single wire UART functionality that used to be part of HAL (now PAL?)

Definitely getting the sense of being on the "bleeding edge" here, and bleeding out... but hopeful someone here can show me the missing link. Thanking you in advance!